🚀 Android Interview Questions Series Part 5: 2025

If you have missed Part 1–5, please catch up soon. Today, we will focus on the latest and must-know questions of Android which are asked in every interview. Come on, let’s polish our coding skills!

If you have missed previous parts, you can find them here: Part 1, Part 2, Part 3, and Part 4.

Android interview Question

1️⃣ When and why to use remember and mutableStateOfin Jetpack Compose?
Answer: rememberis used to retain the state during UI recomposition. mutableStateOftracks state changes and triggers recompose.
Example:

var count by remember { mutableStateOf(0) }  
Button(onClick = { count++ }){
 Text("Count: $count") 
}  

Tip: Think of rememberas the ‘brain’ that remembers the things(values), and mutableStateOfas the ‘alarm bell’ that updates the UI!

2️⃣ How to choose between LaunchedEffect vs rememberCoroutineScope in Compose?
Answer:
LaunchedEffect: For single async task (like API call when a screen is launched). Basically, launchedEffect is called only for the first time where it is defined or only when some change in the key.
rememberCoroutineScope: To launch the coroutine for UI events (button click). This is preferred when need to perform some event, also it provides us a scope that we can handle according to our…